Typewriter attachment



Nov. 11,1930. I J. H. BARTON TYPEW'R ITER ATTACHMENT Filed July 11, 1929 4 Sheets-Sheet 1 i [I L Zak a a 5 Z7 Z7 6 M v D "w V w. l Y 7 7 3,6 1 i a E II 3 J 1 L I I I a H *5 J w TTTTTTTTTTT j Inventor if Jwflafiara A iiorney Nov. 11, 1930.

IACHM TYPEWRITER AT Filed July 11,

Inventor LE/377 1373a)?? Attorney Nov. 11, 1930; J.- H. BARTON TYPEWRITER ATTACHMENT Filed July 11 1929 4 Sheets-Sheet 3 M B w W.

Nav. 11, 1930. J. H. BARTON 1,731,312

'IYPEWRITER ATTACHMENT Filed July 11, 1929 4 Sheets-Shet 4 Jim Bd/rfiro fiemaorizm I Inventor Attorney provid elevation of a Patented Nov. 11 1930 UNITED STATES PATENT JOHN HENRY BARTON, OF MIAMI, FLORID A, ASSIGNOR TO THE FLQRIDA COPY-WEIT- ING- CORPORATION, OF MIAMI, FLORIDA, A CORPORATION OF FLORIDA.

rrrnwarmn Application filed li'uly 11,

The present invention relates to new and useful improvements in typewriters and more particularly to a novel attachment for the same. The same is an im rovement over my copending application, rial No. 314,704, filed October 24, 1928, for a typewriter attachment.

The principal object of this invention is to of the character stated, wherein the parts may be more positive acting and less susceptible to the development of defects.

After referring to the following specifics. tion and claims other important ob ec ts and advantages of the invention will readily become apparent.

In the drawings: Figure 1 represents a fragmentary front conventional typewriter machine equipped with the fpresent invention.

Figure 2 represents a re entary end elevation of a ty ewriter mac ine showing the same equippe with present invention.

Figure 3 represents a vertical sectional view taken substantially on line 3--3 of Figare 1.

Figure l represents a perspective View of one of the ribbon actuating posts.

' Figure 5 represents a sectional view taken e an improved typewriter attachment- ATTACHMENT 1929. Serial No. 377,437.

Figure 11 represents an edge elevation of the ribbon.

Fi are 12 represents a side elevation of the ri bon.

Figure 13 represents an enlarged side elevation showing one end portion of the ribbon and a post connected thereto.

Referring to the drawings wherein like numerals designate like parts, it will be seen in the drawings that 5 generally refers to the typewriting machine, which is of coi'mintiona1 construction in every detail. Mounted upon the carriage of the machine are braclo ets 6-6 each located at one end of the carriage. An elongated bar 7 has its ends disposed through the brackets 6v and suitable nuts 8 serve to stationarily connect the rod to the said bracket, as in the manner shown in Figure 9.

Rockably mounted on the shaft i are the narrow housings 9--9, one at each end of the shaft. 'Enveloping the shaft 7 and inter posedbetween the hpusing 9-4) is a tubular ousing 10, flanged at its ends 11 for attach ment to the said housing 9:

Disposed longitudinally through the tub-' ular housing 10 are the hollow shafts 12 and 13, the former within the latter, and prog'ecting at its ends beyond the ends of the atter. The shaft 12 snugly fits within the shaft 13, while the shaft 13 is provided with a shoulder at each end thereof which serves as a bearing therefor.

Each end of each shaft 12 and 13 rcspectively has a laterally disposed arm 14-. secured thereto in any suitable manner. These arms project forwardly within the housing 9 at each end of the shafts 12 and 13. The niecl1- anism within each housing and at each end of the shafts 12 and 13 is identical, so the description of one will sufiice for both. Each arm 14:has a pocket 15 provided in its free end for receiving the semi-circular head 16 of a link bar 17. Straps 1818 are applied to the sides of the arm 14 in the manner life "ill

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shown in Figure 7 to prevent displacement of the said head 16. The opposite ends of the link bars 17 are also provided with semi circular heads 19 which engage in the semicircular pockets 20 of the ribbon actuating post-s generally referred to by numeral 21.

Each of these posts is constructed of an angularly shaped elongated member, prefcally within each housing 9 with the reduced extension 23 slidable through an opening 28 in the bottoin of the housing. A stud 29 is provided in the upper portion of the housing and springs said stud 29 and the arm 14 for maintaining the arm in an upwardly disposed position for maintaining the post 21 in retracted position.

In Figures 11, 12 and 13, one of the ribbon strips is disclosed and denoted by numeral 31. Each end of each ribbon strip is secured to a plate 32, the said plate 32 being provided with a lug 33 at each end thereof. One of the lugs is adapted to be clamped against the corresponding end of the ribbon 31 in the manner shown in Figure 11.

The other lug 33 is to be clamped against the reduced extension 23 of one of the posts 21. A leaf spring 34 is secured as at 35 to one side of the housing 9 and has its freeend portion disposed laterally as at 36 and backwardly as at 37 on the opposite side of the shaft housing. The offset portion 24 as well as the notched edge portion of each post 21 projects through the vertical slot 38 in the forward portion of the housing in the manner shown in Figure 3. The leaf spring 34 18 disposed across the slot 38 and in the path of the teeth 26 and 27. Obviously when the posts 21 are moved downwardly, the leaf spring 34 will engage over one of the teeth 26 or 27 to maintain the post in a downwardly disposed position against the tensional action of the spring 30. Two teeth 26 and 27 are provided, so that the upper and lower half portions of the ribbon may be utilized.

To accomplish this, a stub shaft 39 is rotatably disposed through the housing 9 1n the manner shown clearly in Figures 7 and 5. The shaft is generally cylindrical in shape but is reduced at 40. The portion removed is on one side of the longitudinal axis of the said shaft so that the shaft acts as an eccentric in use. One end of the shaft is provided with threads as at 41 while the opposite end thereof is provided with a crank handle 42.

A nut 43 is engageable on the threaded end 30 are interposed between the.

of the shaft and by interposing a spring 44 between the nut 43 and the adjacent side of arms will result in the posts 21 moving down- I wardly to a position to permit the leaf spring 34 to engage in the uppermost notch or behind the uppermost tooth 26. Thus the ribbons will be moved downwardly so that the upper half portions thereof will be utilized.

In Figure 10, a spring arm 45 is anchored as at 46 to the typewriter carriage, while the upper end thereof is offset as at 47 to provide a head for engagement with the protuberance 48 on the adjacent side of the housing 9. One of these catches is preferably provided for each housing for maintaining the same in the operable position shown in F igure 2.

By unfastening these members, the attachment may be shifted to the dotted line position shown in Figure 2.

In Figure 3, the platen is denoted by 49 and the feed table 50 is mounted in the usual position, to receive the first and copy sheet. It will be seen that the invention presents a novel, efficient labor saving mechanism in the form of an attachment for typewriters -which can be easily operated and which because of its simple construction will not be susceptible of the developments of frequent defects.

While the foregoing description has been in detail, it is to be understood that numerous changes in the specific shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having thus describedthe invention, what 1s claimed as new 1s:

1. A typewriter attachment comprising a' supplemental copy ribbon, a pair of members, said members being movable and having the ends of the ribbon attached thereto, springs for maintaining the members in ribbon retracted position and rack and detent means for maintaining the members in operated position, and connecting means between the members so that the same will be operated simultaneously, and eccentric means for limiting theoperating movement of the members so that a predetermined half portion of the ribbon may be utilized.

2. A typewriter attachment comprising a supplemental copy ribbon, a pair of members, said members being movable and having the ends of the ribbon attached thereto, springs for maintaining the members in ribbon retracted position and rack and detent means for maintgining the members in operated position, and connecting means between the members so that the same will be operated simultaneously, and eccentric means for lim- -itin1 the operating movement of the members 

